Punching and riveting machine.



No. 877,419; PATENTED JAN. 21, 1908.- J. R. FRENCH. PUNGHING ANDRIVETING MACHINE.

APPLICATION FILED NOV. 14. 1906.

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No. 877,419. PATENTED JAN. 21, 1908.

v v J.R.FRENGH.

PUNGHING AND RIVETING MACHINE.

APPLICATION FILED NOV.14 1906. Q

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JOHN R. FRENCH, OF LOS ANGELES,

CALIFORNIA, ASSIGNOR TO LACY MANUFACTURING COMPANY, OF LOS ANGELES,CALIFORNIA, A CORPORATION OF CALIFORNIA.

PUNCHING AND RIVE'IING- MACHINE.

Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed November 14, 1906. Serial No. 343,443,

To all whom it may concern:

Be it known that I, JOHN R. FRENCH, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles, State ofCalifornia, have invented a new and useful Punching and RivetingMachine, of which the following is a specification.

This invention relates to punching and riveting machines and the mainobject of the invention is to provide a punch or die-press having aturret adapted to carry a series of thrust tools or punches, any ofwhich may be brought into operative position by turning the turret.

The turret in addition to being revoluble has a bodily reciprocatorymovement with means for reciprocating it continually or by singlestrokes, and a further object is to provide means for automaticallyarresting the bodily movement of the turret at the completion of a fullsingle stroke.

Another object is to provide an automatically operated stripper; afurther object be ing to automatically cause said stripper mechanism tobe rendered inoperative when the turret is turned into certain positionsand to render the stripper mechanism operative when the turret is turnedinto other positions.

Another object is to mount the turret in such a manner that its axialpin will be relievedof shock when the machine is in operation, and tocause the shock of impact which the turret sustains when a tool strikesthe work, to be transmitted directly from the turret to the carrier.-

Another object is to provide for readily detaching the turret from itscarrier, when desired, without the removal of any nuts or bolts or otherretaining devices, and to hold the turret securely locked in place whenin position in the carrier.

Another object is to provide means for readily shifting the turret intodifierent positions and to securely lock the turret when in any one ofits positions.

Further objects of the invention will be brought out in the followingdescription.

Referring to the accompanying drawings 2- Figure 1 is a side elevationof a machine embodying my invention. Fig. 2 is an enlarged detail viewin section on line fl-bc Fig. 3.

Fig. 3 is a front elevation of the turret, and v the adjacent mechanism.Fig. 4 is a section equipped with female on line 00 -00 Fig. 2. Fig. 5is a section on line 12 -90 Fig. 3.

1 designates the base frame having an overhanging hollow arm 2.Extending from the frame 1 along underneath the overhanging arm 2 is anarbor 3, the end of which is dies, anvils or other de vices whichpassively coact with the thrust tools carried by the turret.

Extending through the hollow arm is a shaft 4, the rear end of which ismounted in a bearing'5 in the arm 2, its forward end being mounted in abearing 6 in the arm 2. The shaft 4 is provided with suitable clutchmechanism 7 for throwing the shaft into or out of operation. 8 is apulley for driving the clutch. The clutch may be operated by a handlever 9 located near the front end of the arm 2 and connected with theclutch by an operating rod 10. The front end of the shaft 4 is providedwith an eccentric 11, and the shaft 4 has an extension 12 of reduceddiameter beyond the eccentric 11.

A head 13 is formed in the front end of the arm 2 and has a removablefront plate 14 attached thereto by screws 15. As shown in Fig. 4, thehead 13 is recessed and formed with parallel vertical ways 16. Mountedto slide on the ways 16, and inclosed by the front plate 14, is areciprocating carrier 17, the upper end of which is formed with atransverse slot 18, which receives a squared bushing or sliding box 19which is mounted on the eccentric 11. The lower portion of the carrier17 is provided with a concave recess which embraces an arc of more thanonehalf a circle terminating at points 20, as

shown in Fig. 3, and the upper concave wall of the recess forms anabutment 21 having a broad faceof great area for the purpose ofreceiving the shock of impact which the turret 22 sustains when inoperation. The turret 22 comprises a circular revoluble block with abroad face which is seated in the concave recess in the carrier, andwhen in position therein is retained by reason of the concave wall ofthe carrier extending over half the circumference of the turret, (butnot retained solely thereby as will be seen further) the edges 20, asshown in Fig. 3, being somewhat below a horizontal line drawn throughthe axis of the turret. The turret 22 is provided with a segmental ribor flange 23 ,which as shown in dotted lines in Fig. 3, extends throughabout an arc of 45 degrees, and the carrier 17 is provided with aconcentric groove 24 which receives a retaining flange 23 and as thegroove 24 extendsthrough the entire arc embraced by the concavity of thecarrier, the ends of the groove are thus open, hence by revolving theturret sufliciently the retaining flange 23 will be turned entirely outof its seat in the groove 24, thus leaving the turret free to bewithdrawn from its carrier on a line parallel with its axis.

The turret 22 has a central circular socket 25 which does not extendentirely through the turret, as shownin Fig. 2, and this socket receivesthe head 26 of the center pin 2.7 which is mounted in the carrier 17,there being a bronze bushing 28 lining the socket to prevent unduewearing. be revolved on the head26 of the pin 27, and the pin thusserves to guide the turret, although it is obvious that the concave seatin the carrier will serve in a degree to guide the turret. Thus it willbe seen that the object of the pin is that of a guide and retainer forthe turret, and the object of the concave recess is mainly that of anabutment for receiving, the impact sustained by the turret.

The turret 22 is provided with a diametrical slot 29 whichreceivesalocking lever 30 pivoted to a pin 31, which extends radially inthe turret, as shown in Figs. 3 and 5. The slot 29 near the end of thelocking lever 30 has a pocket 32 in which is a coil spring 33 whichbears against the end of the locking lever 30 and serves to depress thelatch portion of the locking lever 30, the carrier 17 having a series ofnotches, in the resent case three, as shown 34, 35 and 36, eit' er ofwhich notches is ada ted to receive the locking lever 30. The lextension forming a handle 37 by means of which the locking lever may bewithdrawn from engagement with a notch andv by which the turret may beturned into the position desired.

A stripper mechanism is provided which comprises a stripper bar 38 whichis tapered as shown in Fig. 4, to allow of a necessary slight rockingmovement, and is received by a recess 39 formed in the head 13. Theupper end of the stripper 38 is connected to a pivoted rock lever 40mounted on a pin 50, and having a bearing face 51 which is adapted to beoperated upon by a-pin 52' about to be described. per 38 is recessed toreceive a coil" spring 53, one end of which spring is attached to a pin54 which is in the end of the arm 2, its outer end being attached to apin 55 in the stri per 38 sothat when the rock lever 40 is out 0.engagement with the pin 52, the spring 53 will hold the stripper 38elevated. As shown in Fig. 5, the pin 52 is carried by the'carrier 17,and the carrier 17 is counterbored to form a recess 53 whichv allows theplay of a flange The turret 22v may ocking lever 30 has an. offset.

As shown in Fig. 2, the strip- 54"formed on the pin 52. coil spring 55bears against one side of the flange 54 and against the carrier 17. Theother end of the pin 52 extends into a tube 56 havin a closed: round end57 in which tube is a relatively strong spring 58 which presses againstthe end of the pin 52. As the carrier is reciprocated it is obvious.that when the pin 52 extends under the rock lever 40, as the carriermoves u the rock lever.40 will be tilted and the stripper 38 will bethrust downward into the position shown.- in Fig. 4 stretching springmoves downthe rock lever 40 is allowed to retract and the stripper willbe moved up by the spring 53. It isdesirable to render the stripper 38inoperative when certain tools of the turret are in. operative positionand to that end. a segmental cam plate 59 is secured tothe turret (seeFigs. 2:, 3 and 5).. In the present embodiment the turret carries threethrust tools, 2'. e., a punch 60, a rivet setter 61, and a lap layer orse'am setter 62.

The stripping. mechanism is needed to operate only when the punch 60 isin operative position, such as shown. in Fig. 3, and therefore the camplate 59 is formed with bearing faces 63 and 64 which. are in two Arelatively weak different planes. The segmental cam plate 59 extendsthrough an are which is ample to maintain its bearing against the roundend 57. The bearing faces are so arranged that when the punch 60 is inoperative position, as shown, the bearing face 64 bears against theround end 57 and holds the tube 56 in so that the heavy spring 58 iscompressed which holds out the pin 52 overcomingthe spring 55'.

end. 57 of the tube 56 and the tube is thrust out by the spring 58, sothat the rounded end 57 rests against the bearing face 63, thus 53, andthat as the carrier.

When the turret is turned to bring either the tool 61 or 62 intoposition,. i the bearing face 64 rides off from the rounded:

relieving the pin 52 from the pressure of the spring 58, whereupontheweaker spring 55 is allowed to expand and acting against the flange54 withdraws the pin 52 from under therock lever 40. The stripper 38 isthen held up during the strokes of the carrier by means of the spring53. When: the turret is again moved to bring the punch 60- forced in bythe into place, the tube 56 is cam plate 59 and compresses the spring 58and if the carrier is on the down stroke, as soon as the pin 52 ridesbelow the-rock lever 40, the strong spring 58 then expands and snaps thepin 52 under the rock lever 40.

-As seen in Fig. 4, a recess 65 is formed. in the head 13 to permit theup and. down bodily movement of the pin 52. As shown in Figs. 2 and 3,.a cam 66 is mounted on the end of the extension 12 of the shaft 4: androtates therewith under a brake lever 67 which has a shoe 68'. The brakelever 67 is connected with a bolt 69 which passes the lap or flatteningthe through a stationary lug formed on the plate 14., and a coil spring71 is arranged between the other end of the bolt 69 and the lug 70 tonormally hold the end of the brake lever 67 in contact with the lug 7 O.The cam 66 is so proportioned that .when the carrier nearly arrives atthe upper end of its stroke the cam will bear against the shoe 68 andthus have its movement arrested by the friction produced. By adjustingthe tension of the spring 71, the friction may be so regulated as tocause the rotation of the shaft 4 to be stopped (when the clutch isthrown out) when the carrier is at the upper end of its stroke. FromFig. 3, it will be seen that the cam 66 is free from the shoe 68 duringthe major part of the revolution of the shaft 4, being only in contacttherewith during a slight amount of rotation either side of the centerwhen the carrier is retracted. Thus in operation when throwing out theclutch the carrier is arrestd automatically in retracted position, andthe tool isprevented from making another stroke.

In the present embodiment the machine is designed for punching rivetholes in pipe and for setting the rivets and for laying seam of thepipe, the mandrel 3 serving as a support for the p it will be noted thatthe punch 60 is located farther out on the turret than are the tools 61and 62. This enables the die to be arranged under the punch and theanvil to be arranged back of the die, so that the hole may first bepunched, then the rivet inserted, then the pipe slipped back slightly toplace the rivet over the anvil, then by turning the turret to bring thehammer 62 in operative position the rivet may be upset by a single blowof the turret.

While I have shown the machine as designed for making pipe, the spiritof invention can readily be incorporated by one skilled in the art inmachines designed for other specific purposes.

What I claim is 1. A carrier having a concave recess, a turret fitted insaid recess, the recess embracing more than half the circumference ofthe turret and the lower part of the turret projecting below thecarrier, and. a pin projecting from the carrier into the center of theturret.

2. A carrier having a segmental concave recess with a concentricsegmental groove, a turret fitted in said recess, and having a segmentalflange engaging in the groove, said flange embracing an are less thanthe arc of the groove for holding the turret in the recess and forpermitting the withdrawal of the turret when it is turned in the recessa certain degree.

3. A carrier, a turret mounted thereon, thrust tools carried by theturret and located in positions having different planes of revolublemovement, supporting means for the work, and devices for coacting withthe tools mounted in the supporting means under their respective thrusttools and on a longi- 70, tudinal line parallel with the axis of theturret.

4. A head, a carrier slidable in the head, a tool holder mounted on thecarrier, a rock lever pivoted to the head, a stripper bar connected tothe rock lever, and a pin carried by the carrier and coacting with therock lever for operating the stripper.

5. A head, a carrier slidable in the head, a tool holder mounted on thecarrier, a rock lever pivoted to the head, a stripper bar connected tothe rock lever, a pin carried by the carrier and coacting with the rocklever for operating the stripper in one direction, and a spring formoving the stripper in the other direction.

6. A head, a carrier slidablein the head, a tool holder mounted on thecarrier, a rock lever pivoted to the head, a stripper bar connected tothe rock lever, a pin in the carrier, and means for projecting said pinunder the rock lever when the turret is in one position.

7. A head, a carrier slidable in the head, a tool holder mounted on thecarrier, a rock lever pivoted to the head, a stripper bar connected tothe rock lever, a pin in the carrier, means for projecting said pm underthe rock lever when the turret is in one position, and means forwithdrawing the pin when the turret is moved into another osition.

8. A head, a carrier sli able in the head, a tool holder mounted on thecarrier, a rock lever pivoted to the head, a stripper bar connected tothe rock lever, a pin in the carrier, means for projecting said pm underthe rock lever when the turret is in one position, means for withdrawingthe pin when the turret is moved into another position, and a spring forreturning the stripper.

9. A head, a carrier slidable in the head, a turret mounted on thecarrier, thrust tools carried by the turret, a rock lever pivoted to thehead, a stripper bar connected to the rock lever, a telescopic device inthe carrier adapted to coact with the rock lever, a cam plate 115carried by the turret and acting against one end of the telescopicdevice for controlling the same.

10. A head, a carrier slidable in the head, a turret mounted on thecarrier, thrust tools 120 carried by the turret, a rock lever pivoted tothe head, a stripper bar connected to the rock lever, a telescopicdevice in the carrier comprising a tube, a pin projecting into the tubeand having a flange, a relatively weak spring 125 between the flange andthe carrier, a relatively strong spring in the. tube bearing against theend of the pin, and a cam late having bearing faces in two differentplanes carried by the turret, whereby the cam faces 130 and springs actto position the" tube and pin according to the position of the turret tocause the pin to coact or not to coact With-the rocklever.

11. In a punching and riveting machine, a turret mounted on the carrier,thrust tools carried by the turret, a locking lever pivoted to theturret to swingina plane parallel With the axis of the turret, thecarrier having a series of notchesadapted toreceive-the locking lever;

12.; Ina punching and riveting machine, a turret mounted on the carrier,thrust tools carried by the turret, a locking lever-pivoted to theturret: to swing in alplane parallel-With the axis of the turret, thecarrier having a series of notches adapted toreceive the locking lever,and as ring between thelocking lever and turret notch.

13. Ina punching and riveting machine, a.

turret mounted on: the carrier, thrust tools carried by the turret, theturret having a diametrical. groove, a. locking: lever lying in saidgroove and pivoted to the turret,. the carrier having a: series.ofnotches for receiving thelever, and lever in; a notch.

14.. A. head,.a carrier slidable in the head and having a' concaverecess embracing an arc-less than a complete circle and having agroove'concentric with the recess,

flange. engaging the groove, the flange emor holding the lever in a aspring for holding the a: turret fitting said recess and having asegmental bracing an are not greater than the uncompleted circle of thegroove.

15. A head, a carrier'slidable in the head and-having a concave recessembracing an arc less than a complete circle and having a grooveconcentric centric operating the carrier, a segmental camcarried by theshaft, a pivoted brake lever on the head, and a spring for holding thebrake lever in the path of the cam.

17. A head, acarrier slidable in the head, a shaft rotating in the headand having an eccentric operating the carrier, a segmental cam on theshaft, a brake lever pivoted to the head, a lug on the head, a boltconnected to the brake lever and passing through the lug, and a springbetween the end of the bolt and the lug for holding the brake leveragainst the-lug and in the pathof the segmental cam; In testimonywhereof, I have hereunto set my hand at Los Angeles, day of October,1906.

JOHN R. FRENCH.

In presence of- GEORGE T. HAoKLEY, FRANK L. A. GRAHAM.

California, this 31st

